| 摘要 |
A hydraulic manifold system is disclosed comprising, in combination, a hydraulic manifold having a liquid-directing hydraulic circuit therein, liquid filter means associated with said hydraulic manifold for filtering hydraulic liquid entering a part of said hydraulic circuit, and by-pass means including a uni-directional check valve associated with said filter means operative upon clogging of the filtering action thereof, each said hydraulic manifold, filter means and by-pass means itself consisting of no pipes, said filter means comprising a filter cavity having inlet and outlet liquid passage means therefor and constructed to receive within itself and to seal against a replaceable liquid filter cartridge disposed in said filter cavity, said hydraulic manifold having means for mounting thereon at least one hydraulic liquid flow-control valve, said hydraulic circuit comprising inlet and outlet ports in said hydraulic manifold for hydraulic liquid, respectively, entering and leaving the latter, a pair of control ports in said hydraulic manifold for said flow-control valve for hydraulic liquid, respectively, entering and leaving said flow-control valve, and liquid passage means for directing hydraulic liquid from said filter cavity outlet liquid passage means to one of said control ports and from the other of said control ports to said hydraulic manifold outlet port, said filter cavity inlet and outlet liquid passage means in communication, respectively, with said hydraulic manifold inlet port and said one control port, said check valve having inlet and outlet liquid passage means therefor in communication, respectively, with said filter cavity and said one control port and constructed to open in the event of clogging of the filtering action to by-pass hydraulic liquid around said filter cartridge from said hydraulic manifold inlet port through said check valve to said one control port.
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